/Engine/Plugins/Runtime/StateTree/Source/StateTreeEditorModule/Public/StateTreePropertyBindingCompiler.h
Adds source struct. When compiling a batch, the bindings can be between any of the defined source structs, and the target struct. Source structs can be added between calls to Compilebatch().
Source struct index.
int32 AddSourceStruct ( const [FStateTreeBindableStructDesc](API\Plugins\StateTreeModule\FStateTreeBindableStructDesc) & SourceStruct )